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6 Engine control unit
⇒ “6.1 Removing and installing engine control unit J623 ”,
page 376
6.1 Removing and installing engine control
unit - J623-
⇒ “6.1.1 Remove and install engine control unit J623 without
protective housing”, page 376
⇒ “6.1.2 Removing and installing engine control unit J623 with
protective housing”, page 377
6.1.1 Remove and install engine control unit -
J623- without protective housing
Special tools and workshop equipment required
♦ Hot air blower - VAS 1978/14A- with nozzle attachment from
wiring harness repair set - VAS 1978 B-
♦ Small grinder with cutting disc, commercially available
♦ Vehicle diagnosis tester
Removing
– If the engine control unit is to be renewed, switch on ignition
and select the following menu items in the Vehicle diagnostic
and service information system :
♦ 0001 - Renew engine control unit
– Switch off ignition and remove ignition key.
Note
If the engine control unit comes into contact with the positive bat‐
tery terminal, permanent damage to the engine control unit will be
the consequence. For this reason, the battery always needs to be
disconnected prior to removing the engine control unit from its
bracket ⇒ Electrical system; Rep. gr. 27 ; Battery; Disconnecting
and connecting battery .
– Release and disconnect connectors -2 and 3- for engine con‐
trol unit - J623- .
Ateca 2017 ➤ , León 2013 ➤ , León ST 2013 ➤
4 cyl. petrol engine (1.8 l and 2.0 l with direct injection, 4 V, exhaust gas turbocharger, timing chain,
EA 888 III. Gen) - Edition 10.2018
376 Rep. gr.24 - Mixture preparation - injection
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